For decades, humans have scanned for signals of alien technology emanating through the galaxy. The search highlights the contradiction between the abundance of planets and stars that stretch across ...

Through the looking glass: The fact that we have yet to discover alien life continues to baffle scientists. While there are many possible explanations, a new theory offers a rather grim perspective: ...

Physicist Richard Feynman argued that fundamental limits of physics, biology, and time make interstellar contact between civilizations effectively impossible. He cited vast distances, the speed of ...